16 research outputs found
Design of a superluminal ring laser gyroscope using multilayer optical coatings with huge group delay
Practical Considerations on the Multi-layer Mirrors for Superluminal Ring Laser Gyroscopes
Theoretical analyses of resonant frequency shift in anomalous dispersion enhanced resonant optical gyroscopes
Multifunctional Interface Modification of Energy Relay Dye in Quasi-solid Dye-sensitized Solar Cells
Dye-sensitized solar cells with 13% efficiency achieved through the molecular engineering of porphyrin sensitizers.
Dye-sensitized solar cells have gained widespread attention in recent years because of their low production costs, ease of fabrication and tunable optical properties, such as colour and transparency. Here, we report a molecularly engineered porphyrin dye, coded SM315, which features the prototypical structure of a donor–π-bridge–acceptor and both maximizes electrolyte compatibility and improves light-harvesting properties. Linear-response, time-dependent density functional theory was used to investigate the perturbations in the electronic structure that lead to improved light harvesting. Using SM315 with the cobalt(II/III) redox shuttle resulted in dye-sensitized solar cells that exhibit a high open-circuit voltage VOC of 0.91 V, short-circuit current density JSC of 18.1 mA cm–2, fill factor of 0.78 and a power conversion efficiency of 13%